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Old 08-06-2016, 08:34 PM
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That was probably my favorite plane ever. So fun to fly that it was easy (for me) to get out of control just by thinking you can do the same thing at 2 feet that you can at 200.
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Old 08-06-2016, 11:16 PM
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Fly R/C!!!
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United States, KS, Cimarron
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Quote:
Originally Posted by CZS550 View Post
Its so close i cut a square on one side for the head and a small cut on the opposite for the plug. Thought i would hate it but Its actually not so bad. I didn't mind doing it because the plane was used and had 3 motors installed. It's kind of my beater plane.
I've always wondered how that would work. I had a VV 40cc twin In a light 30cc plane and got used to that performance and now the 70 on my 91" seems a bit anemic. I've got a question or two... How did it balance out? I'm assuming you have the rudder servo in the tail. Did you have to move the batteries a ways back? This has me extremely interested...
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Old 08-07-2016, 06:26 AM
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300 grams in batteries strapped to 1/8 ply. One 777 on rudder. The setup pictured provided a slightly nose heavy cg. Performing the 45 degree up line test, it tracks on the line and very gradually begins to arch downward. If needed moving these packs forward one or two inches does make it more nose heavy. If I want more neutral or tail heavy I can use pulse 5000 that come in at 400 grams. So I have a very good balance with plenty of room for adjustment.
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Last edited by CZS550; 08-07-2016 at 06:43 AM.
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Old 08-07-2016, 08:06 AM
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Fly R/C!!!
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Have you weighed it? Seems like with that hunk of aluminum on the nose it would tend to come in pretty good on the final approach. I'm recovering mine and thinking of sticking a 85 in it while I've got it torn apart, but I'd hate to lose the smoothness of a twin.
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Old 08-07-2016, 02:57 PM
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I hammer at 1500 feet
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flew this 85 this weekend, and it is very smooth, especially with the KS 95 canister. It has more power than before, and excellent mid-range.
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Old 08-07-2016, 09:28 PM
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I had an RE-3 on mine, aside from the typical peakiness of a pipe, it was a very smooth motor. I had to cut a chuck out of the back of the canister tunnel to fit the exit tube of the pipe, but other than that, it was a simple install. Just add 1/2 inch to the motor box, and expand the cylinder head cutout on the cowl just a little bit... that's it! Oh... you have to hack a hole in the side of the motor mount area so you can get to the carb screws, if I remember.
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Old 08-07-2016, 09:36 PM
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I hammer at 1500 feet
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Here it is.
Flies awesome. Way better than the 60 cc sized motor. The added weight also makes it fly much more precise.
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Old 08-08-2016, 09:34 AM
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Quote:
Originally Posted by orthobird View Post
Here it is.
Flies awesome. Way better than the 60 cc sized motor. The added weight also makes it fly much more precise.
next time you are near by can I fly it tks, super nice looking
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Old 08-08-2016, 12:08 PM
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Fly R/C!!!
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Quote:
Originally Posted by orthobird View Post
Here it is.

Flies awesome. Way better than the 60 cc sized motor. The added weight also makes it fly much more precise.


Everytime I look at how much I'd have to slice and dice the cowl to put a big single in, I shudder. 😱But I'm about willing for it, the 70 just doesn't satisfy my needs..... Or is it wants? 😄

What prop are you running on there Doc?
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Old 08-08-2016, 01:59 PM
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I hammer at 1500 feet
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I am now using the Mejzlik 26 x 10. I also have a 27 X 10, but I want to break her in 1st, before I go with the bigger prop.

Frank, you are more than welcome any time, to fly her. You will love it.
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Old 10-02-2016, 07:32 PM
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I hammer at 1500 feet
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Update for you all. We have over 20 flights with the DA 85, and it is running great. Onboard telemetry reveals peak temperature of 235 F, ambient temp was 84 degrees.
and peak RPM in the air, 7050, with the Mejzlik 26 x 10.

Very low vibrations, and transition is electrical (i am using a KS 95 canister).
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Old 02-26-2017, 10:36 AM
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I hammer at 1500 feet
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UPDATE on this motor!

This is one awesome motor!!

Just wanted to give you all some updates on it

Been flying it and look at temps, same as last time.

But now, look at RPM!!
Same motor, same prop

but probably now broken in,

Peak RPM is 7350

this airplane has unlimited vertical


flown only for IMAC, no 3D
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Old 02-26-2017, 10:59 AM
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I hammer at 1500 feet
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UPDATE on this motor!

.
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Last edited by orthobird; 02-26-2017 at 11:15 AM. Reason: double post
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